Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why do we have another cartridge filled with oil fitted at the bottom silica gel cartridge in power transforers

1 3644

why transformer rating is mentioned in kva?

JK Electric Works,

1 5081

what is the formulae of calculating voltage drop?

2 4854

High Voltage out door substation-annual maintenance, things to be considered

1 4040

How much current can a 3-1/2 core 100 mm wire carry?

Epitome, Focus, Focus Energy,

3 33078

1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

Focus, Focus Energy,

3 25270

Whis machine is having higher efficiency Transformer or Generator

2 4830

What is the latest generation of circuit breakers called?

Epitome, Focus Energy, Jakson, KDC, L&T,

3 23932

What are the special cables required for explosion proof wiring?

IVRCL,

2 16709

What is the similarity and what is the difference between relays and PLC?

NTPC,

3 28862

The company is wiling to buy you 5 pcs of equipments in your electrical tool kit. Plz tell what are the 5 things you want?

3 24962

Suppose an electric motor with a controller is not working. What is the sequence of testing you will do in your troubleshooting?

Emerson,

2 24653

how the BDV of the oil will be checked using moterised controled HV SET?

1 3838

What is an Isolation Transformer? Where it will use?

3 5616

What is the latest generation of circuit breakers called?

Focus, OPTCL,

1 6036

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Un-Answered Questions { Electrical Engineering }

difference between ac series and parallel circuit

2043

wat is d diffr btw shunt coil and trip coil in VCB?

2830

What is open delta Xformer? It's adavntages & Use?

2232

I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

2135

What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB

1598

Difference between a pilot wire and a normal conductor?

2044

What is the working principle of servo motor? And explain it.

1936

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

2046

How to calculate wire length,size & current? ( related to control panel)

2179

area control error

1732

Where voltage are high and current to be interrupted is low the breaker preferred is:

2289

What is meant by stator? What is meant by rotor?

1120

State nyquist stability criterion.

1175

HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?

2049

what is mean by drives?

2015

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